In English, formal emails, e.g. emails to a professor, often start with "Hi", "Hello", "Dear" followed by the receiver's name (and title, if applicable). The ending is usually "Best", "Regards", ...
I was told by friend who is a native mainland speaker that "最近如何", or anything using "如何" to inquire about the state of a person, is a very ancient/formal way of speaking. This was quite a shock to ...